Smoke detector



FIG. 1 is a perspective view of a smoke detector illustrating one embodiment of our new design;

FIG. 2 is a front elevational view of the smoke detector of FIG. 1;

FIG. 3 is a bottom plan view of the smoke detector of FIG. 1;

FIG. 4 is a perspective view of a smoke detector illustrating an alternate embodiment of our new design;

FIG. 5 is a front elevational view of the smoke detector of FIG. 4; and,

FIG. 6 is bottom plan view of the smoke detector of FIG. 4.

The left and right side elevations of the smoke detectors of FIGS. 1 and 4 are not illustrated, as those elevations are mirror images of the respective front elevations of FIGS. 2 and 5. In addition, the backs of the detectors have not been illustrated as they are unadorned and are not part of the design. 

The ornamental design for a smoke detector, as shown and described. 